Well-drill



PATEN'TED FEB. 2, 1904.

C. 0. FOX.

WELL DRILL.

APPLICATION FILED 001s. 1903.

2 SHEBTSSHEET 1.

N0 MODEL.

No. 750,840. PATENTED FEB. 2, 1904.

' C. 0. FOX. 7

WELL DRILL.

APPLICATION FILED OCT. 8, 1903.

H0 MODEL. 2 SHEETS-SHEET 2.

N x N N h //rf N A N UNITED STATES Patented February 2, 1904.

PATENT OEEIcE.

WELL-DRILL.

SPECIFICATION forming part of Letters Patent No. 750,840, dated;February 2, 1904.

Application filed October 8, 1903.

To all whom, it may concern:

Be it known that LCIIRIs'rorIIER CORNELIUS Fox, a citizen of the UnitedStates, residing at Higginsville, in the county of Lafayette, State ofMissouri, have invented certain new and useful Improvements inell-Drills; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

This invention relates to well-drills; and it has for its object toprovide a construction which may be easily operated to speedily drill ashaft of considerable dimensions and in which the ordinary lengthydrill-shafts are not used.

A further object of the invention is to provide a drill including abucket in which the dirt may be raised from the shaft periodically.

Other objects and advantages of the invention will be understood fromthe following description and include the provision of means forpreventing displacement of the frame of the apparatus rotatably.

In the drawings forming a portion of this specification, in which likenumerals of reference indicate similar parts in the several views,Figure 1 is a side elevation showing the drillbucket with the bitsprojecting therebelow. Fig. 2 is a vertical section through the drill,the motors connected with the drill-shafts being in elevation. Fig. 3 isa perspective view of the frame of the drill. Fig. 4 is a transversesection through the bucket and the frame between the upper and lowercross-pieces of the latter. Fig. 5 is a detail view of the upperdrill-bit. Fig. 6 is a detail view of the lower drill-bit.

Referring now to the drawings, the present drill comprises a frameincluding upper and lower cross-pieces 10 and 11 and connectedlongitudinal pieces 12 and 13, this frame being disposed within a metalcylinder 14, forming what may be termed the bucket. The frame isslightly shorter than the bucket, and its members 10 and 11 are disposeddiametrically of the bucket.

In the end pieces 10 and 11 of the frame are bearings in which isreceived a tubular shaft 15, which projects slightly below the bucketSerial No. 176,214. (No model.)

and at its lower end is provided with a bit in the form of a wheelcomprising a felly having teeth deflected downwardly therefrom and whichfelly is connected to the central hub 16 by means of the spokes 17. Theteeth in question are indicated at 18.

Through the hollow shaft is passed a shaft 19, which projects from bothends of the hollow shaft, the lower end of the shaft 19 being pointed,so that it willbore into the earth. Upon the shaft 19, directly abovethe point thereof, is fixed a second bit 20 in the form of a disk havingslits 21 cut from its periphery inwardly beyond and at one side of thecenter of the disk, the disk at one side of each slit being turneddownwardly to form a cutting edge 22. Upon the upper member 10 of theframe are mounted two motors 23 and 2 one of which has its revolublemember connected with the hollow shaft, while the other has itsrevoluble member connected with the solid shaft. These motors areincased, as shown, so as to protect them from injury, and disposed torotate their respective shafts in opposite directions. The result ofrotating the shafts in opposite directions is that the bitscorrespondingly rotate and cut oppositely, so that instead of the frameand bucket rotating in the boring they are held against rotation by theopposition of the bits.

A lifting-tackle is connected with the frame of the drill, so that theentire apparatus may be lifted from or lowered into the boring. As theupper bit cuts the material is forced upwardly into the bucket, and asthe lower bit cuts it isalso forced upwardly between the spokes of theupper bit and into the bucket. When a sufiicient quantity of materialhas passed into the bucket, the latter may be raised and emptied.

When cutting rock, a quantity of water is supplied to the bucket, andthe fine particles that enter the bucket are pumped out, it beingunderstood that the specific manner of using the drill'may be varied tobest suit the different conditions and the wishes ofdifferent operators.

In practice modifications of the specific construction shown may be madeand any suitable materials and proportions may be used for the variousparts without departing from the spirit of the invention.

What is claimed is 1. A well-drill comprising an open-ended bucket, aframe fixed in the bucket, a hollow shaft journaled in the frameconcentric with the bucket, a bit fixed to the lower end of the shaftbelow the bucket and having dirt-passages through its central portion, asecond shaft passed through the hollow shaft and projecting from bothends thereof, a second bit attached to the second shaft below the firstbit, said bits being formed to cut when rotated oppositely, and meansfor rotating the bits in opposite directions.

2. A well-drill comprising disk-shaped bits rotatably mounted one abovethe other, the upper bit having passages therethrough to receivematerial from the lower bit, said bit being formed to cut in oppositedirections of rotation, means for rotating the bits in oppositedirections, and a bucket disposed above and connected with the bits toreceive material therefrom.

3. A well-drill comprising an open-ended cylindrical bucket having aframe fixed therein, a hollow shaft journaled in the framelongitudinally of the bucket, a bit fixed upon the shaft below thebucket and having dirt-passages therethrough, a second bit below thefirst bit, a shaft for the second bit passed through the hollow shaft,and separate motors for the shafts adapted to rotate them in oppositedirections, said bits being formed to cut in opposite directions ofrotation.

In testimony whereof I alfix my signature in presence of two witnesses.

CHRISTOPHER CORNELIUS FOX.

Witnesses:

WILLIAM Fox, VVILLIAM ALKENKoRsT.

